April , 2012

Committee member of the smart meter policy, Department of Energy

Deputy Chair of the Smart house project, Japan Smart Community Alliance

Advisory fellow, Echonet Consortium

Associate Director, Auto ID Labs, Keio University

Masaki Umejima

masaki27@sfc.keio.ac.jp

JSCA国際標準化WG ＥＭＳ－ＳＷＧ

第３回スマートハウス標準化検討会 事務局資料ほか抜粋資料により構成

“Internet of things” as a new keyword in the internet society

• Internet of things means that many types of sensor such as power meter connects to the Internet, which adopts the standardized interface.

• Auto ID Lab is the university research consortium, consisted of 7 universities in worldwide: e.g. MIT[US], Cambridge{UK], Fudan {China] , and Keio University{Japan], and has initiated standardization and research in this field.

1

Energy saving (until now)

Total energy management (from now on)

Storage cells FC HP water heater

系統創

家電蓄

制御

FULL ECOAUTO

系統創

家電蓄

制御

FULL ECOAUTO

系統創

家電蓄

制御

FULL ECOAUTO

系統創

家電蓄

制御

FULL ECOAUTO

• Energy needs to be controlled more efficiently, including “energy creating

devices” and “energy storing devices”, as well as energy saving devices

• Newly define the device objects of “energy creating devices” and “energy storing

devices”

Solar power generation

systems

Energy creating devices

Energy storing devices

○ When optimizing energy consumption in a house level, you need to observe and manage every home device. Thus, network and automatic control system, called Home Energy Management System[HEMS], helps that demand side control.

From “Internet of things” to HEMS

Standardized Organization and ongoing standardized activity

○ HEMS must integrate a lot of home appliance and energy devices, so interoperability had been one concern in 2005 to 2010.

○ Japanese Government and Japan Smart Community Alliance[JSCA], which covers over 700 related companies, has agreed to address ECHONET Lite as the new standardized interface , connecting home appliances: air conditioner, PV, EV, smart meter.

PV

Home appliance Battery

HEMS Taskforce in JSCA

EV

HEMＳ Echonet Lite

Smart meter Taskforce in JSCA

Data Center

Power Company

[Distribution]

Smart

Meter

Home

Echonet Lite

3

4

Grid Power Management System

Power

Management

System

IEC TC57

WG21

Demand side Supply side

Home or Building

Automation

System

Systems

Interface

Interfaces and protocol profiles relevant to systems connected to the electrical grid

○ ECHONET lite has started int’l standardized activity, basing on recommendation from Japanese Government and industry,

○ Ongoing discussion in TC57 WG21, IEC ○ Liaison with other standardized bodies: W3C[WEB] , APAN[IP Layer], NAV6[National

Internet Research Lab in Malaysia] and so on

Ongoing activity for int’l standardization

ECHONET CONSORTIUM

5

Lighter workload of protocol stack ECHONET Lite defines only “ECHONET Lite Communication Processing Block”.

Layer 1-4

OSI Layer

Layer 5-7

PLC Low

Power Wireless

IrDA Bluetooth® Ethernet

UDP/IP UDP/IP

Protocol Difference Absorption Processing Block

ECHONET Communication Processing Block

Application

ECHONET Address

ECHONET Lite Communication Processing Block

Application

Lower Communication Block （IEEE802.15.4 etc.） Transmission Medium

IP Address MAC Address or

Scope of ECHONET Lite Specifications

• Specifies OSI Layer 1 - 7

• Communication address is “ECHONET Address”.

• Specifies OSI Layer 5 - 7

• Communication Address is “MAC Address” or “IP Address”.

ECHONET Lite ECHONET

Picture is

the product of Toshiba

Air conditioner

Object

Lighting

Object

Induction Heating

Object

6

Deployment of ECHONET Lite

Echonet Lite Adopter Can talk IP

Home Energy Management System over Echonet Lite

ECHONET Lite defines “Object” as a command language.

And ECHONET Lite adopter, which gives network access, should be installed on ECHONET Lite product. Thus, every home device can be managed on the open network.

7 © 2009 Daiwa House Industry Co., Ltd. All rights reserved.

home terminal

Portable terminal Integration panel

(PC etc…) Photo frame（組込機器）

http access XML応答

Home server

ECHONET

接点制御機器 control equipment?

Intelligent toilet

home ＡＰＩ

OSGi

http://192.168.＊.＊/smart/rest/request? (HS address、set command field :set、get）

deviceid=echonet.HomeAirConditioner_4 (set devise ID）

&key=RoomTemp （details of instruction）

<resultset type="map">

<result type="value">true</result>

<data type="value">27</data>

</resultset>

What is the temperature

of the air conditioner? It is ２７℃.

Process information

up to purposes,

abilities of terminal

7 The point of this taskforce （reference）samples ; IF implementation of home API

■Residential use of the API

© 2009 Daiwa House Industry Co., Ltd. All rights reserved.

Adapting the concept of WebAPI to home

Appliances and equipment can be controlled without being aware of the underlying communication protocol

Simple control instruction (HTTP/REST) and reply that is easy to reuse（XML)

Thinking from different angle ; “Let the outsider make great service”

Service terminal Home server

Crime prevention sensor

Health-care equipment

home API

What is the temperature of

the air conditioner?

It’s ２２℃. Telecommunication

Standard B

Telecommunication Standard C

Wie viele Grade

ist es jetzt?

Es ist 25 Grade

Telecommunication Standard A

Air conditioner

Home appliances/ equipment

8

■concept of home API

The point of this taskforce （reference）samples ; IF implementation of home API

ECHONET CONSORTIUM

9

Each device is expressed as “object”

ECHONET Lite network

sensor lighting Air conditioner

controller

Sensor object

lighting object

Air conditioner object

controller Air conditioner

request

response

(1) Unification of access interface to device -> it is easier for a controller developer to develop software. (2) Clarification of information which is open to other devices -> it is easier to design networked devices -> it is easier to realize interoperability

Advantages of object-oriented model

Object-oriented model of ECHONET Lite system

Air conditioner object

ECHONET CONSORTIUM

10

Object-oriented is a way to model complex devices’ functions

What is device object?

Cooling control program

Heating control program

Louver control program

temperature

Operation mode

Compressor rpms

modeling

Air conditioner object

Disclosed service

Disclosed data

Object name Air conditioner object

temperature Operation mode

set get notify etc.

programs data

Air conditioner

The scheme to decide national standard about a powermeter

JSCA

Battery ＷＧ

…WG ＥＭＳ ＳＷＧ

EV ＳＷＧ

Transmission ＳＷＧ

CEMSTeam

Smart house WG

EMS-SWG

ＢＥＭＳ（ＦＥＭＳ）Team

HEMS TF

Smart meter

Internationalization WG

○ With referring the decision by Japan Smart Community Alliance[JSCA], covering over 700 companies, the smart meter study working group in the department of energy, Japan, has finalized the basic thinking about the interface of the power meter.

11

Smart meter policy, Department of Energy

STF of Power Meter

Measuring Database

Application company

Accounting

Network for Root A

HGW

PV ヒートポンプ ・燃料電池

蓄電池

エアコン

TV IHD

HEMS

PCS

PC

「見える化」

Database

②Power Company

③Third party

①Power meter

①HOME

・Consumption ・Backward flow B

C

Public Network

A

Deployment of Power meter 12/45

12

○ Power meter has two roots. One is the connection between the meter and the power company, called root A. Another is root B, which is the network connection between the meter and home.

○ Important decision is the agreement which Root A and Root B must be equal in terms of measuring . It means that power company accounts a user in using root B.

○ And B root use IP and Echonet lite as the standardized interface.

・Consumption ・Backward flow

○ Smart meter, PV, storage batteries, fuel cells, EV/PHEV, air conditioners and so on are main equipment to connect with HEMS.

○ For connecting all the devices requires, we need to sort out the rules in the industries, to insure safety, such as data link and physical layer.

13 ５．３ Arrangement of cross-industry rules for the connection of various devices

出所：第３回ＨＥＭSタスクフォース アドホック会合 資料

UI機器

家電

創蓄エネ機器

電力網（発電・送配電）

情報網（インターネット）

スマートメータ（将来）

パワーコンディショナー

ユーティリティ／インフラ モビリティ

テレビ

エアコン

高効率給湯器

家庭用燃料電池

家庭用蓄電池

太陽光発電

EV/PHEV

各種サービス

HEMS

スマートフォン

WiFi

ゲートウェイ 宅内システム

HEMS

（将来）

○ Standard that has been investigated in energy equipment field at home is SEP2.0 from the U.S、KNX from Europe、ECHONET Lite from Japan.

○ About Japanese standard, at this point, we have high level technical accumulation of great control of energy equipment. It is important that Japan use our good points and cooperate with other countries.

ＫＮＸ（Europe）

ＳＥＰ2.0（the U.S） ECHONET Lite（Japan） ・try to use control system of

building to home system

・try to spread to China ・moved to the IP base

・possible to control more than 80

equipment

・moved to the IP base

・possible to control (ON/OFF)

14 Integration and liaison with other standards about smart house